Wheel tread



C. BOUTHILLETTE.

WHEEL TREAD.

APPLICATION FILED APII. 22, 1922.

ll-Sg Patented Oct. 17, N22..

limination inea .april Be it known inni i, Ln'r'rn, a subject of i' ain, residingr at Acton Quebec7 Canada.y have inve and useful Improvements i and I d0 hereby dechire ha he inil is a full, clear, and exact description invention, such as .vili enable nhere in the art to which. ii angevin-ins t and use the same.

This invention relates i@ new ami. nseii improvements 1n Wheel ili'eafas.y ahy those applicable to anioinnbile he primary Obie i' the inve,T provide tread de .Le nspeciaily snialile Vior heavy driving, ane"e in ,Ceci in cover fface of the tire in erde io pro'; Without interfering mth me the tire.

The invention fui'her Censis longitudinal riu which ping of the wheeis when ihn brakes are an plied.

A preferred enxbmlii'nent if ii e is shmvn in the, avm which: y

Figure l is side eievaimi Figure 2 is a sem on .':f a iti device applied in;

Figure 3 is a fiagjnlen'arv pian via-v: of ihe device; and, i

Figure 4 is a nerspecive view ni" ene Gf the tread elements. A Referring to the (.lraw'ii'igs Characters. the devine manif, x of curved imniiiers I3 wlrieii mation and are aaiapir 1 l5 shown in Fig-nre i'. 5*' Si Umar? :im provided with a lniff k Infine? the purpose ni" which is if; prvveni slippingo the vvneei when suddenly appiie'fiY e or unige ribs 8 are also framed on the :in

0i each member 5.

t one end of iiu Inngiigzciinai viii is formed a pair oi' apernreil ears while the opnosie envi is 'Formed in the naure of an eniarge lng l() having an aperture ll therethrough. fihe dimensiens of tile ears and ings are sneli that the lug- 10 may be received beit-Ween 'he 9 of the adjacent read eieinen. The adjacent elements are thus nniefl by inea-ns of pins l2 passed il'nongix 'ne a f res ci the ears and lugs. The ends of i.. einnsverse ribs 8 are apernred as ai 'i5 .and receivefiinlzs 14;. These links are hooked as at 15 o the nsua side chains 16 at oppnsite sides of the tire. The side chains are tightened and theii'iends joined .by means of a chain tiggtener; 1"?.

lt is to be note fhat i'liie si ll formation ni ihe treaii elements 5 serves in pioec 'the tire, while the pivotal connections and the angniar spares 'i8 hevveen the eieinents make he Levies iiexiiie and responsive to the resilienq iii@ tire.

wWhile a s; i @nibndin'ien of he inventi n has been iilnsiraeil and describe-fl, it is he linde nfl, hnt vai-inns details of consrnrtinn may Le aitereii withent departing from h@ swpe the invention as' indicated in; the accnmpanvi Claim.

Having: inns ii Iy described 'ihe ini/'ention. wha rimini as new ami ffiesire iiroieri, by .il A L is:-

in combination vmh a iie, a yplurality of iread members nach having a transverse and a Geni-rai iengi'aslin rib9 side chains ai'. opposite sides oi' ille ire. means ab he ends of ehe lnnffirnfiina ribs for minneeiingg the tri-nils to mie anni er. a nd means ai lle ends oi" ihn iransverse rihs treads in he side` chains, said members being spaeefl from nach Oilier tn allow pivotal nim'ement heveiiei'" .ln wiiness Wil hanii.

,For mnneeingr the 

